baby food pacifier wholesale.Application of vinyl silicone oil in additive forming liquid silicone rubber

　　1. The vinyl content is too low, the crosslinking density of silicone rubber is small, the hardness is low, and the tearing strength is low;

　　2, the vinyl content is too high, the hardness of vulcanized rubber becomes larger and brittle, and the aging resistance decreases. The small molar mass of vinyl silicone oil can reduce the viscosity of the adhesive, improve the fluidity, and improve the cross-linking density of silicone rubber to a certain extent, so that it has a certain tensile strength and hardness.

　　High molar mass vinyl silicone oil can improve the elasticity and elongation at break of silicone rubber, and high performance silicone rubber can be obtained by using vinyl silicone oil with wide molar mass distribution. The effect of end-vinyl and side-vinyl on LSR performance is also different in vinyl silicone oil. When the end-vinyl silicone oil is coupled with the growth of molecular chain, the tear resistance of silicone rubber is improved. In addition to the growth of molecular chains, the crosslinking process can also increase the crosslinking density, and further improve the physical and mechanical properties of vulcanized rubber. Therefore, different vinyl silicone oils can be used to obtain LSR with different properties and different uses.

　　Electronic and electrical potting adhesive

　　In the electronics industry, in order to improve the stability and reliability of components and the whole machine, it is often necessary to fill the electronic components or assembled parts to avoid the pollution and erosion of atmospheric water, impurities and various chemical atmospheres, so that the whole machine can play normal electrical functions stably. Liquid silicone rubber electronic potting adhesive can play the role of moisture, dust, corrosion and shock resistance, and can improve the accuracy and stability of electronic components. Electronic components potting material requirements are: excellent electrical properties, good insulation; Excellent mechanical properties, high strength, good elasticity; Low viscosity, good fluidity, easy to potting operation. In order to ensure the electrical insulation of potting adhesive, it is required that the water content of vinyl silicone oil is small and the ion content is small. It is found that the electrical properties of can sealing adhesive are greatly improved after the vinyl silicone oil is refined by the adsorbent. At the same time, in order to ensure the fluidity and mechanical properties of potting adhesives, end vinyl silicone oil with low viscosity is often used, and side chain vinyl silicone oil is more densely crosslinked and has better mechanical properties

　　1. The two ends of the vinyl group, with a strong reactivity, can (under the action of a catalyst) with the hydrogen-containing silicone oil reaction; It can also participate in many other reactions.

　　2. It has better compatibility with organic materials than methyl silicone oil and is easier to integrate with other organic materials.

　　3. Because it contains active double bonds, it is easy to react with many organic materials such as polyurethane and acrylic acid.

Read recommendations:

Can a pacifier affect your baby's teething? Can a pacifier affect your baby's mouth shape?good baby

Little pig bite bite music

Silicone cleaning gloves

newborn baby nipple manufacturer

baby nipple pacifier wholesaler